Use enum values instead of magic numbers for indexing into the attribute list.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@165925 91177308-0d34-0410-b5e6-96231b3b80d8

lib/CodeGen/CGCall.cpp

@@ -1006,7 +1006,7 @@ void CodeGenModule::ConstructAttributeList(const CGFunctionInfo &FI,
 
   if (RetAttrs.hasAttributes())
     PAL.push_back(llvm::
-                  AttributeWithIndex::get(0,
+                  AttributeWithIndex::get(llvm::AttrListPtr::ReturnIndex,
                                          llvm::Attributes::get(getLLVMContext(),
                                                                RetAttrs)));
 
@@ -1080,7 +1080,8 @@ void CodeGenModule::ConstructAttributeList(const CGFunctionInfo &FI,
     ++Index;
   }
   if (FuncAttrs.hasAttributes())
-    PAL.push_back(llvm::AttributeWithIndex::get(~0,
+    PAL.push_back(llvm::
+                  AttributeWithIndex::get(llvm::AttrListPtr::FunctionIndex,
                                          llvm::Attributes::get(getLLVMContext(),
                                                                FuncAttrs)));
 }

lib/CodeGen/CGStmt.cpp

@@ -1634,7 +1634,8 @@ void CodeGenFunction::EmitAsmStmt(const AsmStmt &S) {
   llvm::CallInst *Result = Builder.CreateCall(IA, Args);
   llvm::Attributes::Builder B;
   B.addAttribute(llvm::Attributes::NoUnwind);
-  Result->addAttribute(~0, llvm::Attributes::get(getLLVMContext(), B));
+  Result->addAttribute(llvm::AttrListPtr::FunctionIndex,
+                       llvm::Attributes::get(getLLVMContext(), B));
 
   // Slap the source location of the inline asm into a !srcloc metadata on the
   // call.  FIXME: Handle metadata for MS-style inline asms.

lib/CodeGen/CodeGenModule.cpp

@@ -1139,7 +1139,7 @@ CodeGenModule::GetOrCreateLLVMFunction(StringRef MangledName,
   if (D.getDecl())
     SetFunctionAttributes(D, F, IsIncompleteFunction);
   if (ExtraAttrs.hasAttributes())
-    F->addAttribute(~0, ExtraAttrs);
+    F->addAttribute(llvm::AttrListPtr::FunctionIndex, ExtraAttrs);
 
   // This is the first use or definition of a mangled name.  If there is a
   // deferred decl with this name, remember that we need to emit it at the end
@@ -1822,7 +1822,9 @@ static void ReplaceUsesOfNonProtoTypeWithRealFunction(llvm::GlobalValue *Old,
 
     // Add the return attributes.
     if (RAttrs.hasAttributes())
-      AttrVec.push_back(llvm::AttributeWithIndex::get(0, RAttrs));
+      AttrVec.push_back(llvm::
+                        AttributeWithIndex::get(llvm::AttrListPtr::ReturnIndex,
+                                                RAttrs));
 
     // If the function was passed too few arguments, don't transform.  If extra
     // arguments were passed, we silently drop them.  If any of the types
@@ -1847,7 +1849,9 @@ static void ReplaceUsesOfNonProtoTypeWithRealFunction(llvm::GlobalValue *Old,
 
     llvm::Attributes FnAttrs =  AttrList.getFnAttributes();
     if (FnAttrs.hasAttributes())
-      AttrVec.push_back(llvm::AttributeWithIndex::get(~0, FnAttrs));
+      AttrVec.push_back(llvm::
+                       AttributeWithIndex::get(llvm::AttrListPtr::FunctionIndex,
+                                               FnAttrs));
 
     // Okay, we can transform this.  Create the new call instruction and copy
     // over the required information.

lib/CodeGen/TargetInfo.cpp

@@ -970,7 +970,8 @@ void X86_32TargetCodeGenInfo::SetTargetAttributes(const Decl *D,
       // Now add the 'alignstack' attribute with a value of 16.
       llvm::Attributes::Builder B;
       B.addStackAlignmentAttr(16);
-      Fn->addAttribute(~0U, llvm::Attributes::get(CGM.getLLVMContext(), B));
+      Fn->addAttribute(llvm::AttrListPtr::FunctionIndex,
+                       llvm::Attributes::get(CGM.getLLVMContext(), B));
     }
   }
 }